SBB80JP-2Rev. 01/17Models : NRC98DV (GQ-C2857WS-FF US)NRC98OD (GQ-C2857WS US)CONDENSING TANKLESS GAS WATER HEATEROwner’s GuideNORITZ America Corporation- Do not store or use gasoline or other flammable vapors and liquids in thevicinity of this or any other appliance.- WHAT TO DO IF YOU SMELL GAS• Do not try to light any appliance.• Do not touch any electrical switch; do not use any phone in your building.• Immediately call your gas supplier from a neighbor’s phone. Follow thegas supplier’s instructions.• If you cannot reach your gas supplier, call the fire department.- Installation and service must be performed by a qualified installer, serviceagency or the gas supplier.If the information in this manual is not followed exactly, a fire or explosionmay result causing property damage, personal injury, or death.WARNINGFOR USE IN RESIDENTIAL OR MANUFACTURED HOME APPLICATIONS.Thank you for purchasing this Noritz Tankless Gas Water Heater.Before using, please:Read this manual completely for operation instructions.Completely fill out the warranty registration card (included separately)and mail the detachable portion to Noritz America Corporation.Keep this manual (and the remainder of the warranty registration card)where it can be found whenever necessary.Installation must conform with local codes, or in the absence of localcodes, the National Fuel Gas Code, ANSI Z223.1/NFPA 54 - latest editionand/or the Natural Gas and Propane Installation Code CSA B149.1 -latest edition.When applicable, installation must conform with the ManufacturedHome Construction and Safety Standard, Title 24 CFR, Part 3280 or theCanadian Standard CAN/CSA-Z240 MH Mobile Homes, Series M86.Noritz America reserves the right to discontinue, or change at anytime, the designs and/or specifications of its products without notice.CERTIFIED RLow NOx Approvedby SCAQMD14 ng/J or 20 ppm(Natural Gas Only)